What is a good thing to avoid in mobile UX?
Don't replicate the web experience on apps
Mobile apps designed as web experiences feel awkward and unnecessary — not because they have issues with usability, but because it's simply different from what users expect to see. Practical recommendation: Avoid using underlined links in mobile apps.
Will an app with a good UI have a good UX?
Good UI can never make up for bad UX; it's like picking up a beautifully decorated cake that actually tastes awful when you bite into it. So, when it comes to product design, UX and UI complement each other—and in today's competitive market, getting both aspects right is an absolute must.